Antibiotic coated catheter to decrease infection: pilot study

Area of Science:

• Infectious Diseases
• Critical Care Medicine
• Medical Device Technology

Background:

• Nosocomial catheter-related bloodstream infections (CR-BSI) are a significant cause of morbidity and mortality in critically ill patients.
• Central venous catheters (CVCs) coated with rifampin and minocycline (RM) have been proposed to reduce colonization and CR-BSI rates.
• Recent clinical trials have questioned the impact of RM-coated CVCs, necessitating further investigation.

Purpose of the Study:

• To compare the rates of catheter colonization and CR-BSI between RM-coated CVCs and control CVCs in a cohort of critically ill patients in Brazil.
• To evaluate the clinical effectiveness of RM-coated CVCs in preventing CR-BSI in a specific patient population.

Main Methods:

• A prospective, controlled trial was conducted in a medico-surgical intensive care unit (ICU).
• Patients were assigned to receive either a control or an RM-coated CVC.
• Catheter tips were cultured post-removal, alongside blood cultures, to assess colonization and CR-BSI rates.

Main Results:

• Out of 100 evaluated catheters, 49 were uncoated and 51 were RM-coated.
• Catheter colonization was significantly lower in the RM-coated group (11.8%) compared to the control group (28.6%) (p = 0.036).
• CR-BSI incidence was 3.9% in the RM-coated group versus 10.2% in the control group (p = 0.26), with no statistically significant difference.

Conclusions:

• RM-coated CVCs demonstrated a significant reduction in catheter colonization rates compared to uncoated CVCs.
• Despite lower colonization, the incidence and rates of CR-BSI were similar between the RM-coated and uncoated CVC groups in this pilot study.
• Further research may be needed to clarify the clinical utility of RM-coated CVCs in preventing CR-BSI in critically ill patients.